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A developable UV-curable hydrofluoric acid-resistant protective adhesive

A hydrofluoric acid-resistant and protective adhesive technology, applied in the direction of adhesives, adhesive types, polyurea/polyurethane adhesives, etc., can solve the problems of easy falling off, easy failure, and increased cost.

Active Publication Date: 2016-06-29
惠晶显示科技(苏州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In organic electroluminescent displays, the average lifespan of existing organic light-emitting materials can reach more than 15,000 hours, which can already be applied to actual mass-produced products. However, organic light-emitting materials have a disadvantage: they are prone to failure when exposed to water and oxygen. , if water pollution and erosion can be completely prevented during the encapsulation process of OLED devices, the life of the components may be further improved
[0006] On the one hand, the hydrofluoric acid-resistant protective glue in the prior art has insufficient adhesion between the protective film and the glass surface, and it is easy to fall off, causing a large number of defects and increasing costs; Protective film to corrode the glass substrate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0036] The preparation method of the developable UV-curable hydrofluoric acid-resistant protective adhesive comprises the following steps: stirring the resin, active monomer, photoinitiator, filler, auxiliary agent, and organic pigment at a temperature lower than 30°C according to the mass ratio Evenly, a developable UV-curable hydrofluoric acid-resistant protective adhesive can be obtained.

[0037] Test the viscosity, if the test result does not meet the set viscosity threshold, then adjust the viscosity to the viscosity threshold, the set viscosity threshold is the viscosity range of the developed developable UV curable hydrofluoric acid resistant protective adhesive. Viscosity is the main parameter that determines the performance of developable UV-curable hydrofluoric acid-resistant protective adhesive. If the viscosity is too high, it is not conducive to the coating of developable UV-curable hydrofluoric acid-resistant protective adhesive; if the viscosity is too small, th...

Embodiment 1

[0045] In this embodiment, the composition and proportioning (mass percentage) of each raw material that can develop UV curing hydrofluoric acid resistant protective glue are as follows:

[0046] Bisphenol A epoxy acrylic photocurable resin 50%, polyether-based urethane acrylate 20%, photoinitiator 3694.5%, dodecafluoroheptyl methacrylate 5%, trimethylolpropane tri(meth)acrylate 5%, pentaerythritol tri(meth)acrylate 5%, filler 8%, additives 2% and pigment P.R.2540.5%, stir and mix evenly.

[0047] According to the above test method of etching resistance performance, the etching resistance performance of the test plan is measured, the thickness of the protective film is 35mm, the etching time is 1.5h, the etching depth is 0.45mm, and the debonding film time is 30min.

Embodiment 2

[0049] In this embodiment, the composition and proportioning (mass percentage) of each raw material that can develop UV curing hydrofluoric acid resistant protective glue are as follows:

[0050] Bisphenol A epoxy acrylic photocurable resin 22%, PU modified epoxy acrylic resin 22%, aliphatic polyurethane acrylate 20%, photoinitiator 3696.5%, hexafluorobutyl acrylate 2%, dodecafluoromethacrylate 3% heptyl ester, 10% trimethylolpropane tri(meth)acrylate, 9% filler, 5% additive and 0.5% pigment P.R.

[0051] Measure the etching resistance of the test plan according to the above-mentioned etching resistance testing method, the thickness of the protective film is 60mm, the etching time is 3h, the etching depth is 1.10mm, and the debonding film time is 75min.

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Abstract

The invention discloses a developable UV cured hydrofluoric acid-resistant protection glue, which comprises the following components by mass percentage: 15-75% of main resin, 10-55% of auxiliary resin and 6-30% of active monomer. The developable UV cured hydrofluoric acid-resistant protection glue has excellent gluing capability by comparing with the hydrofluoric acid-resistant protection glue in prior art, and has extremely high bonding intensity and excellent hydrofluoric acid-resistant etching performance.

Description

technical field [0001] The invention relates to a developable UV-curable hydrofluoric acid-resistant protective adhesive, in particular to an adhesive used for etching a groove with a flat bottom and capable of holding a desiccant on a glass cover plate of an organic electroluminescent display (OLED) Developable UV curable hydrofluoric acid resistant protective adhesive. Background technique [0002] OLED, Organic Light Emitting Diode (Organic Light Emitting Diode), also known as Organic Electro Luminescence Display (OELD), is a new generation of flat panel display technology after TFT-LCD (Thin Film Transistor Liquid Crystal Display). OLED is different from the traditional LCD display method. It is a self-luminous material without a backlight. It uses a very thin organic material coating and a glass substrate. When an electric current passes, these organic materials will emit light. In addition, OLED has the advantages of simple structure, high contrast, thin thickness, wi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J163/10C09J175/14C09J11/00C09J9/00
Inventor 王伟滕祥飞
Owner 惠晶显示科技(苏州)有限公司
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